Integrating physical and numerical simulation techniques to design hot-packed forging process of TiAl alloys

摘要

Based on a joint application of DEFORM-3D-based numerical simulation and physical simulation techniques, an investigation of hot forging of large-scale TiAl alloy billet deformation was carried out. The temperature dependence of the thermal and mechanical properties of the billet was considered. Based on the simulation, the material flow and thermo mechanical field variables such as stress and strain were obtained. Based on the simulation results, a novel package of proprietary design is used. To verify the validity of simulation results, the hot packed forging experiments were also carried out in a forging plant. The forging experiments show that the novel package unit can realize basically the quasi isothermal environment and ensure the quality of forging part, and it can provide reference to improve and optimize the large scale TiAl alloy forging technological design process. The numerical and experimental results demonstrate the effectiveness of the developed procedure.